CN108649477A - All insulation type voltage transformer GIS cabinets - Google Patents
All insulation type voltage transformer GIS cabinets Download PDFInfo
- Publication number
- CN108649477A CN108649477A CN201810814040.8A CN201810814040A CN108649477A CN 108649477 A CN108649477 A CN 108649477A CN 201810814040 A CN201810814040 A CN 201810814040A CN 108649477 A CN108649477 A CN 108649477A
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- CN
- China
- Prior art keywords
- type voltage
- insulation type
- voltage transformer
- cabinet
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention provides a kind of all insulation type voltage transformer GIS cabinets, belong to high voltage electric equipment technical field, it includes cabinet, disconnecting switch, branched all insulation type voltage transformer and high-tension fuse are provided in cabinet, all insulation type voltage transformer is connected by high-tension fuse with disconnecting switch, disconnecting switch is arranged on front side of the top of cabinet, high-tension fuse is arranged close to the lower section of disconnecting switch, and positioned at the front side of cabinet, the branched all insulation type voltage transformer is arranged in the bottom of the cabinet.All insulation type voltage transformer GIS cabinets in the present invention, disconnecting switch is arranged on front side of the top of the cabinet, high-tension fuse is close to disconnecting switch and is disposed below, the branched all insulation type voltage transformer being connected with disconnecting switch is arranged in the bottom of cabinet, it is rationally distributed, it is compact-sized, so as to put branched all insulation type voltage transformer in cabinet, improve the space availability ratio of cabinet.
Description
Technical field
The present invention relates to high voltage electric equipment technical field more particularly to a kind of all insulation type voltage transformer GIS cabinets.
Background technology
High speed railway construction amount is gradually increased, and has a large amount of I and II loads, railway 10 kV power distribution institute one in high-speed railway
As connect by local 110kV substations and draw the mutual indepedent 10kV power supplys of two-way, to ensure that the railway system powers；High-speed railway section is logical
The loads such as letter, signal are powered using through track, and through track generally uses full cable circuit, and uses single-core cable.
Currently, railway 10 kV power distribution institute main bus-bar section voltage transformer and perforation bus section, busbar section voltage transformer are generally using half
Insulated type voltage transformer.But there are the following problems using semi-insulating type voltage transformer：On the one hand, pressure regulator neutral point is penetrated through
When using earth-free form, if through track cable generation singlephase earth fault, iron core of voltage transformer winding and electric system
Capacitance will constitute resonance circuit, generate resonance overvoltage, be easy to cause voltage transformer and be burned；On the other hand, work as place
Singlephase earth fault occurs with the another way 10kV circuits of bus section, busbar section with railway distribution substation 10kV electric power loops in 110kV substations
And when charging operation, also zero sequence overvoltage can be generated in railway 10 kV power distribution institute inlet wire bus section, busbar section, be easy to cause voltage transformer
Ferromagnetic resonance, to burn out voltage transformer.
Therefore, semi-insulating type voltage transformer is changed to all insulation type voltage transformer by part railway 10 kV power distribution.
But all insulation type voltage transformer volume is big compared with semi-insulating type voltage transformer, and gas-insulated switch (Gas Insulated
Switchgear, abbreviation GIS) cabinet product compared with air insulation switch (Air-Insulated Switchgear, abbreviation AIS) cabinet
Product is small, and branched all insulation type voltage transformer is difficult in a GIS cabinet, and installation and maintenance are inconvenient.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of all insulation type voltage transformer GIS cabinets of rational and compact, in a GIS
Branched all insulation type voltage transformer can be put in cabinet, facilitate installation maintenance.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of all insulation type voltage transformer GIS cabinets, including cabinet,
Disconnecting switch, branched all insulation type voltage transformer and high-tension fuse, all insulation type voltage are provided in the cabinet
Mutual inductor is connected by the high-tension fuse with the disconnecting switch, and the disconnecting switch is arranged before the top of the cabinet
Side, and in SF6 gas chambers, the high-tension fuse is arranged close to the lower section of the disconnecting switch, and positioned at the cabinet
Front side, the branched all insulation type voltage transformer are arranged in the bottom of the cabinet.
Further, the leading-out terminal of the high-tension fuse is connected with cable sleeve, and the leading-out terminal of the cable sleeve is set
It is equipped with elbow cable connector, the elbow cable connector is connected by cable with all insulation type voltage transformer.
Further, the primary side of all insulation type voltage transformer is provided with switching copper bar, in the switching copper bar
The leading-out terminal of upper fixed installation cable termination, the elbow cable connector is connected by cable with the cable termination.
Further, all insulation type voltage transformer is three, is connected using delta connection form, wherein two
Rear side in the cabinet is set, in addition a front side for being located at the cabinet, three all insulation type voltage transformers point
It is not fixedly mounted on the bottom plate of the cabinet by a holder.
Further, all insulation type voltage transformer GIS cabinets further include harmonic elimination apparatus, and the harmonic elimination apparatus passes through electricity
Cable is connected with the primary side N lines of all insulation type voltage transformer, and the harmonic elimination apparatus is arranged in the bottom of the cabinet.
Further, the disconnecting switch is set in SF6 gas chambers with the high-tension fuse.
Further, all insulation type voltage transformer is molded using poured with epoxy resin.
(3) advantageous effect
All insulation type voltage transformer GIS cabinets provided by the invention, disconnecting switch are arranged on front side of the top of cabinet, high pressure
Fuse is close to disconnecting switch and is disposed below, and the branched all insulation type voltage transformer being connected with disconnecting switch is arranged in cabinet
The bottom of body, it is rationally distributed, it is compact-sized, so as to put branched all insulation type voltage transformer in cabinet, improve
The space availability ratio of cabinet.
Description of the drawings
Fig. 1 is the structural schematic diagram of one preferred embodiment of all insulation type voltage transformer GIS cabinets of the present invention；
Fig. 2 is the side view of all insulation type voltage transformer shown in Fig. 1.
In figure：1, cabinet；2, disconnecting switch；3, all insulation type voltage transformer；4, high-tension fuse；5, harmonic elimination apparatus；
6, cable sleeve；7, elbow cable connector；8, cable termination；9, earthing switch.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figure 1, a kind of all insulation type voltage transformer GIS cabinets include cabinet 1, it is equipped with and keeps apart in cabinet 1
Close 2, branched all insulation type voltage transformer 3 and high-tension fuse 4.Wherein, disconnecting switch 2 is set in SF6 gas chambers, for pacifying
It cuts off the power in dress and maintenance process.All insulation type voltage transformer 3 is used to detect the voltage value on busbar in a power distribution system,
And provide voltage value for measurement, protective device.High-tension fuse 4 is similarly installed in SF6 gas chambers, for the overload the case where
Incision deenergizing, to protect all insulation type voltage transformer 3 not to be damaged.All insulation type voltage transformer 3 uses epoxy resin
Moulding by casting is connected by high-tension fuse 4 with disconnecting switch 2.The size of all insulation type voltage transformer 3 is larger, typical ruler
Very little is 320mm*230.5mm*265mm, and concrete structure, can not be by all insulation type electricity as shown in Fig. 2, according to traditional layout
It presses mutual inductor 3 to be packed into GIS cabinets, needs the position for adjusting each device in cabinet 1 thus.In an embodiment of the present invention, every
It leaves and closes 2 tops for being mounted on cabinet 1, and positioned at the front side of cabinet 1.High-tension fuse 4 closes on disconnecting switch 2 and under it
Side, the high-tension fuse 4 are similarly disposed at the front side of cabinet 1.Branched all insulation type voltage transformer 3 is arranged at the bottom of cabinet 1
Portion.
Since railway 10 kV power distribution institute main bus-bar section voltage transformer is frequently necessary to whether detection circuit single-phase earthing occurs
Failure, therefore three all insulation type voltage transformers 3 of setting open-delta connection type in cabinet 1 of the embodiment of the present invention.
Wherein, two all insulation type voltage transformers 3 are mounted on the rear side of cabinet 1, and an all insulation type voltage transformer 3 is mounted on cabinet
The front side of body 1, the arrangement mode after being formed two before one.It should be noted that since three all insulation types can be placed in cabinet 1
Voltage transformer 3, correspondingly, two all insulation type voltage transformers 3 can also be placed in cabinet 1.Specifically, each Zhi Quan
Insulated type voltage transformer 3 is fixed by the bracket on the bottom plate or both side plate of cabinet 1.
In addition, the primary side in all insulation type voltage transformer 3 is also equipped with harmonic elimination apparatus 5, effectively to reduce all insulation
The probability of ferromagnetic resonance occurs for type voltage transformer 3, ensures the normal working performance of all insulation type voltage transformer 3.Harmonic elimination fills
It sets 5 by cable to be connected with the primary side N lines of all insulation type voltage transformer 3, three all insulation type voltage transformers 3 and harmonic elimination
5 four components of device are arranged in quadrangle.The height of harmonic elimination apparatus 5 is slightly below all insulation type voltage transformer 3.Traditional high pressure
Need reserved connection ranking to set in cabinet, in contrast, the embodiment of the present invention by cable connection, it is possible to prevente effectively from connection row with
3 stress of all insulation type voltage transformer caused by all insulation type voltage transformer 3 mismatches, you can influenced to avoid connection row complete
The working condition of insulated type voltage transformer 3, integral installation is convenient, compact in design, improves the space availability ratio in cabinet 1.
In an embodiment of the present invention, the leading-out terminal of high-tension fuse 4 is connected by copper rod with cable sleeve 6, cable joint-box
The leading-out terminal of pipe 6 is provided with elbow cable connector 7.Elbow cable connector 7 passes through cable and the one of all insulation type voltage transformer 3
Secondary side is connected.Specifically, the primary side of all insulation type voltage transformer 3 is equipped with switching copper bar, is fixedly mounted on switching copper bar
The leading-out terminal of cable termination 8, elbow cable connector 7 is connected by cable with cable termination 8.
Earthing switch 9 is installed in the lower section of high-tension fuse 4.The earthing switch 9 is located at the front side of cabinet 1, with high pressure
Fuse 4 is mounted in the same operating room；All insulation type voltage transformer 3 is mounted on elbow cable connector 7 in cable vault.
6 communication cable room of cable sleeve and operating room.Disconnecting switch 2 is arranged in SF6 gas chambers, and leading-out terminal passes through copper rod and high-voltage fuse
Disconnected device 4 is connected.
From the foregoing, it will be observed that all insulation type voltage transformer GIS cabinets in the embodiment of the present invention, can be arranged more in cabinet 1
Branch all insulation type voltage transformer 3, can effectively reduce the space occupancy rate of all insulation type voltage transformer 3, to be installed
In GIS cabinets, entire gas-insulated voltage transformer cabinet is easy for installation, compact in design.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. a kind of all insulation type voltage transformer GIS cabinets, including cabinet, which is characterized in that be provided with and keep apart in the cabinet
It closes, branched all insulation type voltage transformer and high-tension fuse, all insulation type voltage transformer pass through the high-voltage fuse
Device is connected with the disconnecting switch, and the disconnecting switch is arranged on front side of the top of the cabinet, and the high-tension fuse is close
The lower section of the disconnecting switch is arranged, and positioned at the front side of the cabinet, and the branched all insulation type voltage transformer setting exists
The bottom of the cabinet.
2. all insulation type voltage transformer GIS cabinets according to claim 1, which is characterized in that the high-tension fuse
Leading-out terminal is connected with cable sleeve, and the leading-out terminal of the cable sleeve is provided with elbow cable connector, the elbow cable connector
It is connected with all insulation type voltage transformer by cable.
3. all insulation type voltage transformer GIS cabinets according to claim 2, which is characterized in that all insulation type voltage
The primary side of mutual inductor is provided with switching copper bar, and cable termination is fixedly mounted on the switching copper bar, and the elbow cable connects
The leading-out terminal of head is connected by cable with the cable termination.
4. all insulation type voltage transformer GIS cabinets according to claim 1, which is characterized in that all insulation type voltage
Mutual inductor is three, is connected using delta connection form, wherein two all insulation type voltage transformers are arranged described
The rear side of cabinet, in addition an all insulation type voltage transformer be located at the front side of the cabinet, three all insulation types
Voltage transformer is fixedly mounted on by a holder on the bottom plate of the cabinet respectively.
5. all insulation type voltage transformer GIS cabinets according to claim 4, which is characterized in that all insulation type voltage
Harmonic elimination apparatus is equipped in mutual inductor cabinet, the harmonic elimination apparatus passes through cable and all insulation type voltage transformer primary side N lines
It is connected, the harmonic elimination apparatus is arranged in the bottom of the cabinet.
6. according to claim 1-5 any one of them all insulation type voltage transformer GIS cabinets, which is characterized in that the isolation
Switch is set in SF6 gas chambers with the high-tension fuse.
7. all insulation type voltage transformer GIS cabinets according to claim 1, which is characterized in that all insulation type voltage
Mutual inductor is molded using poured with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810814040.8A CN108649477A (en) | 2018-07-23 | 2018-07-23 | All insulation type voltage transformer GIS cabinets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810814040.8A CN108649477A (en) | 2018-07-23 | 2018-07-23 | All insulation type voltage transformer GIS cabinets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108649477A true CN108649477A (en) | 2018-10-12 |
Family
ID=63760068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810814040.8A Pending CN108649477A (en) | 2018-07-23 | 2018-07-23 | All insulation type voltage transformer GIS cabinets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108649477A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202534964U (en) * | 2012-03-23 | 2012-11-14 | 广西银河迪康电气有限公司 | Air tank type voltage transformer cabinet with three-station isolating switch |
| CN203367849U (en) * | 2013-07-26 | 2013-12-25 | 南通法瑞电气有限公司 | Functional potential transformer (PT) cabinet used for full-insulation ring main unit |
| CN103594952A (en) * | 2013-11-28 | 2014-02-19 | 扬州新概念电气有限公司 | Solid insulation measuring cabinet with separation disconnecting link |
| CN207117032U (en) * | 2017-06-19 | 2018-03-16 | 南京海兴电网技术有限公司 | A kind of PT cabinets with disconnecting switch |
| CN208461317U (en) * | 2018-07-23 | 2019-02-01 | 中铁第四勘察设计院集团有限公司 | All insulation type voltage transformer GIS cabinet |
-
2018
- 2018-07-23 CN CN201810814040.8A patent/CN108649477A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202534964U (en) * | 2012-03-23 | 2012-11-14 | 广西银河迪康电气有限公司 | Air tank type voltage transformer cabinet with three-station isolating switch |
| CN203367849U (en) * | 2013-07-26 | 2013-12-25 | 南通法瑞电气有限公司 | Functional potential transformer (PT) cabinet used for full-insulation ring main unit |
| CN103594952A (en) * | 2013-11-28 | 2014-02-19 | 扬州新概念电气有限公司 | Solid insulation measuring cabinet with separation disconnecting link |
| CN207117032U (en) * | 2017-06-19 | 2018-03-16 | 南京海兴电网技术有限公司 | A kind of PT cabinets with disconnecting switch |
| CN208461317U (en) * | 2018-07-23 | 2019-02-01 | 中铁第四勘察设计院集团有限公司 | All insulation type voltage transformer GIS cabinet |
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